Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Input / Stylus / RawStylusInputReport.cs / 1305600 / RawStylusInputReport.cs
using System; using System.ComponentModel; using System.Windows; using System.Windows.Threading; using System.Windows.Media; using System.Windows.Input.StylusPlugIns; using System.Security; using System.Security.Permissions; using MS.Internal.PresentationCore; // SecurityHelper using MS.Internal; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Input { ///////////////////////////////////////////////////////////////////////// ////// The RawStylusInputReport class encapsulates the raw input provided /// from a stylus. /// ////// It is important to note that the InputReport class only contains /// blittable types. This is required so that the report can be /// marshalled across application domains. /// internal class RawStylusInputReport : InputReport { ///////////////////////////////////////////////////////////////////// ////// Constructs an instance of the RawStylusInputReport class. /// /// /// The mode in which the input is being provided. /// /// /// The time when the input occured. /// /// /// The PresentationSource over which the stylus moved. /// /// /// The PenContext. /// /// /// The set of actions being reported. /// /// /// Tablet device id. /// /// /// Stylus device id. /// /// /// Raw stylus data. /// ////// Critical: This handles critical data in the form of PresentationSource. /// TreatAsSafe:There are demands on the critical data(PresentationSource) /// [SecurityCritical,SecurityTreatAsSafe] internal RawStylusInputReport( InputMode mode, int timestamp, PresentationSource inputSource, PenContext penContext, RawStylusActions actions, int tabletDeviceId, int stylusDeviceId, int[] data) : base(inputSource, InputType.Stylus, mode, timestamp) { // Validate parameters if (!RawStylusActionsHelper.IsValid(actions)) { throw new InvalidEnumArgumentException(SR.Get(SRID.Enum_Invalid, "actions")); } if (data == null && actions != RawStylusActions.InRange) { throw new ArgumentNullException("data"); } _penContext = new SecurityCriticalDataClass(penContext); _actions = actions; _tabletDeviceId = tabletDeviceId; _stylusDeviceId = stylusDeviceId; _data = data; _isSynchronize = false; } ///////////////////////////////////////////////////////////////////// /// /// Constructs an instance of the RawStylusInputReport class. /// /// /// The mode in which the input is being provided. /// /// /// The time when the input occured. /// /// /// The PresentationSource over which the stylus moved. /// /// /// The set of actions being reported. /// /// /// Raw stylus data StylusPointDescription. /// /// /// Raw stylus data. /// ////// Critical: This handles critical data in the form of PresentationSource. /// TreatAsSafe:There are demands on the critical data(PresentationSource) /// [SecurityCritical,SecurityTreatAsSafe] internal RawStylusInputReport( InputMode mode, int timestamp, PresentationSource inputSource, RawStylusActions actions, StylusPointDescription mousePointDescription, int[] mouseData) : base(inputSource, InputType.Stylus, mode, timestamp) { // Validate parameters if (!RawStylusActionsHelper.IsValid(actions)) { throw new InvalidEnumArgumentException(SR.Get(SRID.Enum_Invalid, "actions")); } if (mouseData == null) { throw new ArgumentNullException("mouseData"); } _penContext = new SecurityCriticalDataClass(null); _actions = actions; _tabletDeviceId = 0; _stylusDeviceId = 0; _data = mouseData; _isSynchronize = false; _mousePointDescription = mousePointDescription; _isMouseInput = true; } ///////////////////////////////////////////////////////////////////// /// /// Read-only access to the set of actions that were reported. /// internal RawStylusActions Actions { get { return _actions; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus context id that reported the data. /// internal int TabletDeviceId { get { return _tabletDeviceId; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus context id that reported the data. /// ////// Critical: provides access to critical member _penContext /// internal PenContext PenContext { [SecurityCritical] get { return _penContext.Value; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus context id that reported the data. /// ////// Critical: This handles critical data _penContext /// TreatAsSafe: We're returning safe data /// internal StylusPointDescription StylusPointDescription { [SecurityCritical, SecurityTreatAsSafe] get { return _isMouseInput ? _mousePointDescription : _penContext.Value.StylusPointDescription; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus device id that reported the data. /// internal int StylusDeviceId { get { return _stylusDeviceId; } } ///////////////////////////////////////////////////////////////////// internal StylusDevice StylusDevice { get { return _stylusDevice; } set { _stylusDevice = value; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to the raw data that was reported. /// ////// Critical: Access the critical field - _data /// TreatAsSafe: No input is taken. It's safe to a clone. /// [SecurityCritical, SecurityTreatAsSafe] internal int[] GetRawPacketData() { if (_data == null) return null; return (int[])_data.Clone(); } ///////////////////////////////////////////////////////////////////// ////// Critical: Access the critical field - _data /// TreatAsSafe: No input is taken. It's safe to return the last tablet point. /// [SecurityCritical, SecurityTreatAsSafe] internal Point GetLastTabletPoint() { int packetLength = StylusPointDescription.GetInputArrayLengthPerPoint(); int lastXIndex = _data.Length - packetLength; return new Point(_data[lastXIndex], _data[lastXIndex + 1]); } ///////////////////////////////////////////////////////////////////// ////// Critical - Hands out ref to internal data that can be used to spoof input. /// internal int[] Data { [SecurityCritical] get { return _data; } } ///////////////////////////////////////////////////////////////////// ////// Critical - Setting property can be used to spoof input. /// internal RawStylusInput RawStylusInput { get { return _rawStylusInput.Value; } [SecurityCritical] set { _rawStylusInput.Value = value; } } ///////////////////////////////////////////////////////////////////// internal bool Synchronized { get { return _isSynchronize; } set { _isSynchronize = value; } } ///////////////////////////////////////////////////////////////////// RawStylusActions _actions; int _tabletDeviceId; ////// Critical: Marked critical to prevent inadvertant spread to transparent code /// private SecurityCriticalDataClass_penContext; int _stylusDeviceId; /// /// Critical to prevent accidental spread to transparent code /// [SecurityCritical] int[] _data; StylusDevice _stylusDevice; // cached value looked up from _stylusDeviceId SecurityCriticalDataForSet_rawStylusInput; bool _isSynchronize; // Set from StylusDevice.Synchronize. bool _isMouseInput; // Special case of mouse input being sent to plugins StylusPointDescription _mousePointDescription; // layout for mouse points } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SerializationHelper.cs
- CommonGetThemePartSize.cs
- ResourceProviderFactory.cs
- EditingCommands.cs
- FreeFormDesigner.cs
- DataGridViewSelectedCellsAccessibleObject.cs
- Panel.cs
- ThicknessAnimationBase.cs
- ScrollProperties.cs
- QuaternionRotation3D.cs
- ListItemsCollectionEditor.cs
- FrameworkPropertyMetadata.cs
- UmAlQuraCalendar.cs
- EpmSyndicationContentDeSerializer.cs
- ZipIORawDataFileBlock.cs
- ActivityCodeDomSerializer.cs
- Roles.cs
- _ShellExpression.cs
- _CookieModule.cs
- WebPartMinimizeVerb.cs
- GridView.cs
- RuleSetBrowserDialog.cs
- Propagator.JoinPropagator.cs
- LambdaCompiler.Logical.cs
- User.cs
- CallSiteOps.cs
- AssemblyUtil.cs
- FolderNameEditor.cs
- NameTable.cs
- COM2ComponentEditor.cs
- WebPartUtil.cs
- CodeCatchClause.cs
- WebPartDisplayModeCollection.cs
- RelationshipEnd.cs
- SwitchElementsCollection.cs
- Stroke.cs
- ToolStripDropDownButton.cs
- PingReply.cs
- RadioButtonAutomationPeer.cs
- SystemIPGlobalProperties.cs
- WorkflowViewStateService.cs
- Rect3DConverter.cs
- SmiRequestExecutor.cs
- ValidationSummary.cs
- ColumnResizeUndoUnit.cs
- Expander.cs
- Visual3DCollection.cs
- RowToFieldTransformer.cs
- DbException.cs
- CellConstant.cs
- FrameworkElement.cs
- SessionEndedEventArgs.cs
- CuspData.cs
- PersonalizationProviderCollection.cs
- CancelEventArgs.cs
- IndexOutOfRangeException.cs
- Form.cs
- NavigateEvent.cs
- OleDbRowUpdatedEvent.cs
- ButtonColumn.cs
- CompiledQueryCacheEntry.cs
- WizardSideBarListControlItem.cs
- UpdatePanelTriggerCollection.cs
- SafeNativeMethods.cs
- Axis.cs
- TransportOutputChannel.cs
- SystemResourceHost.cs
- CurrencyManager.cs
- ConfigurationSectionGroup.cs
- CompareValidator.cs
- FixedSOMElement.cs
- URLAttribute.cs
- Visual.cs
- JsonQueryStringConverter.cs
- BypassElementCollection.cs
- ComplexTypeEmitter.cs
- NonParentingControl.cs
- TypeTypeConverter.cs
- SqlCommandSet.cs
- SocketElement.cs
- ValueProviderWrapper.cs
- _ChunkParse.cs
- HtmlInputButton.cs
- MonthCalendar.cs
- ModuleBuilder.cs
- FragmentNavigationEventArgs.cs
- AppDomainAttributes.cs
- WorkerRequest.cs
- AutomationAttributeInfo.cs
- GlyphInfoList.cs
- SafeArrayRankMismatchException.cs
- InstallerTypeAttribute.cs
- RepeaterItemCollection.cs
- EventEntry.cs
- TempEnvironment.cs
- Color.cs
- StorageInfo.cs
- SelectionListComponentEditor.cs
- Expr.cs
- Effect.cs